CHRISTINA Aguilera is planning to make another movie — and she wants her costar to be her BFF Nicole Richie!

The singer/actress — who can soon be seen starring alongside Cher in upcoming flick Burlesque –  is apparently ready to sign up for a comedy surrounding two showbiz mothers and wants friend and fellow real life celeb parent Nicole to join the cast.

“Christina is very excited about this move into acting,” a source said.

“As a mother she’s particularly keen on a comedy role in which she gets to play one of two diva mothers in Hollywood. She wants Nicole as the other half of the double act. They are already a great double act as friends and parents.”

Meanwhile, Aguilera says she has increased respect for single mothers since she split from husband Jordan Bratman.

The 29-year-old pop star — who has a two-year-old son Max with the music executive — now realizes how tough it is to care for a child alone since she separated from Jordan in October.“My focus first and foremost is my son Max. More power to single moms and those out there doing it,” she said.

“At the end of the day, he’s the love of my life. I adore him and he’s such a character and he’s so happy and that’s what’s most important.”

Christina is managing to juggle all her responsibilities as a parent and successful singer and actress, but now builds her daily life around the tot and makes sure she is at home every night to sing him lullabies in bed.

“It’s hard just even being a working mom and trying to balance and juggle everything on your plate,” she said.

“But I like to be the first thing [my son Max] wakes up to in the morning and the last thing he goes to bed at night seeing, and singing him his lullabies before bed. It means the world to me to be able to do that.”

Although she was raised by just her mother Shelly following her parents’ divorce, she wants to make sure Max’s upbringing is less chaotic.

“I grew up in a very chaotic household when I was younger so I want to make sure to instill in him a lot of love,” she said.

Source: Showbiz Spy